In the optochin susceptibility testif there is a zone of inhibition of 19-30mm surrounding the disk following overnight incubation at 37 degrees celcius the colony most likely consists of
A. Staphylococci
B. Intestinal bacilli
C. Pneumococci
D. Enterococci
Ans: C. Pneumococci
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Clinical specimens from suspected cases of epiglottitis should be plated at least to _______ agar(s)
a. sheep blood b. sheep blood and chocolate c. Regan-Lowe d. charcoal horse blood
Climbing plants, such as vines, rely on touch to navigate and develop tendrils that coil around objects they encounter. Roots also rely on touch to navigate their way through the soil. When roots come into contact with an object, they generally grow in a direction away from the object. Based on this information, which of the following statements is true?
A. Both tendrils and roots are displaying thigmonastic responses to an object in the environment. B. The tendrils are displaying a thigmonastic response while the roots are displaying a thigmotropic response. C. The tendrils are displaying a positive thigmotropic response while the roots are displaying a negative thigmotropic response. D. The tendrils are displaying a thigmotropic response while the roots are displaying a thigmonastic response. E. The tendrils are displaying a negative thigmotropic response while the roots are displaying a positive thigmotropic response. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about plant responses to their environments? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which statement is true about the effect of stress on a population?
a. Plants compete more in an ideal environment. b. Plants compete more in a stressful environment. c. Only abiotic factors influence populations. d. Stressful environments brought about by man do not effect populations. e. Stressful environments brought about by nature do not effect populations.
A physician reports to you the lab results in identifying your genetic condition relating to your skin health. "DNA fingerprint" information indicates that you have two different versions of the allele for a particular skin protein, and this is called
a. heterozygous. b. homozygous. c. dominant. d. homologous. e. recessive.